diff --git a/library/think/cache/driver/File.php b/library/think/cache/driver/File.php
index ea5688e5..5c98d799 100644
--- a/library/think/cache/driver/File.php
+++ b/library/think/cache/driver/File.php
@@ -221,9 +221,13 @@ class File extends Driver
             $this->rm('tag_' . md5($tag));
             return true;
         }
-        $fileLsit = (array) glob($this->options['path'] . '*');
-        foreach ($fileLsit as $path) {
-            is_file($path) && unlink($path);
+        $files = (array) glob($this->options['path'] . ($this->options['prefix'] ? $this->options['prefix'] . DS : '') . '*');
+        foreach ($files as $path) {
+            if (is_dir($path)) {
+                array_map('unlink', glob($path . '/*.php'));
+            } else {
+                unlink($path);
+            }
         }
         return true;
     }
diff --git a/library/think/cache/driver/Lite.php b/library/think/cache/driver/Lite.php
index 9e702eed..b9d10097 100644
--- a/library/think/cache/driver/Lite.php
+++ b/library/think/cache/driver/Lite.php
@@ -180,6 +180,6 @@ class Lite extends Driver
             $this->rm('tag_' . md5($tag));
             return true;
         }
-        array_map("unlink", glob($this->options['path'] . $this->options['prefix'] . '*.php'));
+        array_map("unlink", glob($this->options['path'] . ($this->options['prefix'] ? $this->options['prefix'] . DS : '') . '*.php'));
     }
 }